Winchester 21 Grand American 20ga/410 2 BBL set. 410 barrels are 28in SK and SK. 20ga barrels are 28in Mod and Full. SN 32,2XX. Single selective trigger. Automatic ejectors. Both barrels have beavertail forearms. 14 5/8 LOP checkered butt. 1 3/8 comb 2in heal. 98%. Beautiful grain in wood. With oak and leather case.